Envelope



w. BALUK March 11, 1947.

ENVELOPE Fiied Feb. 9, 1945 Patented Mar. 11, 1947 ENVELOPE Waldemar Baluk, Nor-quay, Saskatchewan, Canada Application February 9, 1945, Serial No. 576,990

1 Claim. 1

The present invention relates to new and useful improvements in envelopes of a type designed for sending through the mails, and the invention has for its primary object to provide a duplex envelope embodying two separate address parts which may be successively used.

An important object of the present invention is to provide two envelopes in one whereby to economize the amount of paper required for the manufacture thereof.

A further object of the invention is to provide a duplex envelope embodying an original envelope and a return envelope which are of such construction that they may be made to enclose a letter and then sealed, addressed and stamped in the usual way and which may be used by the addressee to receive a reply letter and then sealed, addressed and stamped in the ordinary manner.

A further object of the invention is to provide an article of this character of simple and practical construction which is neat and attractive in appearance, relatively inexpensive to manufacture and otherwise Well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout the views, and in which:

Figure 1 is a plan view showing the back of the envelope with the two sealing flaps.

Figure 2 is a longitudinal sectional view.

Figure 3 is a plan view of the front of the envelope having the used front face partly removed and thereby placing the second envelope in condition for 1156.

Referring now to the drawings in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral In designates the main or return envelope and with the numeral ll designating the pocket thereof, while the numeral l2 designates the front face and the numeral I3 designates the side flaps foldable upon each other and secured at their folded edges to form the back. A sealing flap having a gummed edge is shown at M and the bottom end of the envelope is closed by a bottom flap l5.-

The frontface l2 of the return envelope I is covered with a sheet of paper providing an extra front face I 6 having a sealing flap I1.

The side edges of the outer front face l6 are folded over the side edges of the back l3 of the return envelope to form narrow flaps I8 which are glued or cemented in place against the back I3 of the return envelope. The outer front face is formed with a bottom flap l9 having a tab 20 adapted to enter an elongated transversely extending opening 2| in the flap l5 and glued or cemented therein.

In using the envelope, the sealing flap M of the main or return envelope I0 is folded inside the pocket II, as shown by the dotted lines in Figure 2 of the drawings, and the envelope then has the appearance of an ordinary type envelope. The flap I1 is used to seal the envelope and the front face l6 bears the address and postage stamp.

After the envelope has been first used, the outer front face I6 is removed by cuttin the same along its side edges, as shown in Figure 3 of the drawings, and along the bottom at the opening 2|, thereby leaving the front face l2 of the return envelope exposed and the flap I4 is then pulled out of the pocket II and the return envelope is then ready for addressing and mailmg.

The open end of the envelope between the flaps M and I 1 provides a pocket within which thin writing paper designated by the dotted lines at 2-3 may be inserted and which is particularly convenient for Army uses in making a return reply.

From the foregoing it will be apparent that two separate and distinct envelopes are provided adapted for successive use and by means of which a considerable saving in paper may be made.

In view of the foregoing description taken in conjunction with the accompanying drawings, it is believed that a clear understanding of the construction, operation and manner of use of the article will be quite apparent to those skilled in this art. A more detailed explanation thereof is accordingly deemed unnecessary.

It is understood, however, that even though I have herein shown and described a preferred embodiment of my invention, the same is susceptible of certain changes fully comprehended by the spirit of the invention as herein described, and the scope of the appended claim.

Having thus described the invention, what I claim is:

A. duplex envelope comprising a return envelope havin a body consisting of a front, two sealed side flaps, a sealed end flap and an open end flap, said sealed end flap being provided with an elongated slot therein including, a second front arranged over the first front and attached bummer WALDEMAR BALUK.

REFERENCES CITED The following references are of record in the file of this patent:

5 UNITED STATES PATENTS Number Name Date 1,304,161 Delaughter May 20, 1919 2,212,587 Cronauer Aug. 27, 1940 10 1,811,341 Welch June 23, 1931 424,123 Minton Mar. 25, 1890 905,307 Halfin Dec. 1, 1908 1,151,442 Crull Aug, 24, 1915 Bomar Dec. 8, 1874 

